package org.example.service;

import org.example.pojo.User;

import java.util.Set;

/**
 * @author LiYa
 * @version 1.0
 * @className UserService
 * description TODO
 * @since 2020/9/15 13:30
 */
public interface UserService {
    Set<User> getAll();
    boolean addOne(User user);
    boolean removeOne(User user);
    boolean modifyOne(User user);
}
